The 125 Hp. Union Aircraft Engine
The 125 hp. Union aircraft engine is the product of the Union Gas Engine Co., of Oakland, Cal. It is of the vertical 6-cyl. water-cooled type, with valves in the head, and develops its rated horsepower at 1,400 r.p.m. The weight of the engine, complete with two carburetors, two magnetos, pumps and water piping, is 485 lb., which gives a weight of 3.88 lb. per horsepower.